code: def random_scalars_batch():
      return np.random.randint(
          0, num_classes, size=batch_size, dtype=np.int32
      )
  
imports: from functools import partial
  from nvidia.dali.pipeline import Pipeline
  import nvidia.dali.ops
  import nvidia.dali.types
  from test_utils import check_batch
  from nose_utils import raises
  import numpy
label_desc: Use image node_id 5 for calling a global function with example usage: random_scalars_batch() and returns: np